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On this page 9 sections
Our verdict · EcoFlow
A proven 3.6 kWh home backup station that charges fast
The DELTA Pro still covers a day or more of home essentials and recharges quickly from the wall. The newer DELTA Pro 3 is EcoFlow's current flagship.
- Capacity
- 3,600 Wh
- AC output
- 3,600 W
- Wall charge
- About 2.7 hr at 1,800 W
- Weight
- 99 lb
Best for
Home backup at 120 V for a fridge, freezer, lights and devices over a day or more, with fast wall charging between outages.
Skip it if
You need 240 V from one unit, a stated UPS switchover time
- 3,600 Wh LiFePO4
- 3,600 W output, 7,200 W surge
- Up to 3,000 W wall charging (about 1.8 hours)
- 1,600 W solar input
- 120 V only from a single unit
- No stated switchover time
- 48–60 dB, 99 lb
Rating breakdown (whole-home (3.5 kwh and up) class)
| Criterion | Weight | Score | Based on |
|---|---|---|---|
| Wall charging speed | 20% | 10.0 | 3,000 W input |
| AC output | 20% | 2.0 | 3,600 W |
| Solar input | 10% | 4.1 | 1,600 W |
| Backup switchover | 15% | 3.0 | not stated |
| Portability | 10% | 10.0 | 36 Wh/lb |
| Expandability | 10% | 10.0 | to 25,000 Wh |
| Battery life & warranty | 15% | 10.0 | 5-year warranty, 6,500+ cycles |
| Capacity (Wh) | 3600 |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycle life | 6,500 cycles to 50% |
| AC output, continuous (W) | 3600 |
| AC output, surge (W) | 7200 |
| AC charge time | About 2.7 hr at 1,800 W (1.8 hr at 3,000 W max) |
| Max AC charging input (W) | 3000 |
| Max solar input (W) | 1600 |
| Solar input voltage range | — |
| UPS switchover (ms) | Not stated (EPS) |
| Weight (lb) | 99 |
| Expandable to (Wh) | 25000 |
| Warranty (years) | 3 + 2 with app registration |
Key specs at a glance
What the numbers mean in practice
- 3,600 Wh capacity: about 1.5 days of a fridge and router.
- 3,600 W at 120 V, 7,200 W surge: runs most household appliances one or two at a time. X-Boost runs some heating devices rated up to 4,500 W at reduced power.
- LiFePO4, 6,500 cycles to 50%: note the 50% end point; most stations quote 70–80%. See LiFePO4 vs lithium-ion.
- 99 lb: it sits on wheels and is meant to stay in one place.
- Expandable: EcoFlow quotes up to 25 kWh using two units with extra batteries.
- Warranty: 3 years, plus 2 with app registration.
Spec sheets are easy to misread; watts vs watt-hours explains which number answers which question.
Charging speed
Fast from the wall, strong on solar
From a standard outlet it charges at 1,800 W, full in about 2.7 hours. EcoFlow quotes up to 3,000 W wall input and a full charge in as little as 1.8 hours.
It takes up to 1,600 W of solar, which EcoFlow says fills it in about 3.5 hours in good sun. See solar panel sizing.
Capacity and real runtime
About a day and a half of essentials
Estimated runtimes on the DELTA Pro
- CPAP, no humidifier, DC cord3.9 days
- CPAP with humidifier, AC39 h
- Fridge + Wi-Fi router38 h
A fridge and router run for about 1.5 days. See how long a power station runs a refrigerator, or try the runtime calculator.
Output: what it can and can't run
3,600 W at 120 V
Four 120 V 20 A outlets share 3,600 W, with a 7,200 W surge. It also has a 30 A Anderson port, two 100 W USB-C ports, four USB-A ports and a 126 W car socket.
A single unit is 120 V only, so it can't run 240 V appliances such as a well pump on its own.
Backup (UPS) and app
EPS mode, switchover not stated
Plugged into the wall, it powers your devices and switches to battery if the grid drops. EcoFlow doesn't state the switchover time, so we can't say whether every computer will stay on. See using a power station as a UPS.
It works with the EcoFlow app over Wi-Fi.
Noise
Best kept in a garage or utility room
EcoFlow rates it at 48–60 dB at 1 m, depending on load and temperature. That's noticeable in a bedroom, so a garage or utility room suits it better.
How it compares
Against other home backup stations
| Spec | EcoFlow Delta Pro | Anker SOLIX F3800 Plus | Jackery Explorer 5000 Plus |
|---|---|---|---|
| Capacity (Wh) | 3600 | 3840 | 5040 |
| AC output, continuous (W) | 3600 | 6000 | 7200 |
| AC charge time | About 2.7 hr at 1,800 W (1.8 hr at 3,000 W max) | — | 1.7 hr (fastest mode, per Jackery) |
| Max solar input (W) | 1600 | 3200 | 4000 |
| Weight (lb) | 99 | 136.7 | 134.5 |
| Warranty (years) | 3 + 2 with app registration | 5 | 5 + 2 optional |
| Price | Check price | Check price | Check price |
- Anker SOLIX F3800 Plus: 3,840 Wh and 6,000 W at 120/240 V from one unit, with a 5-year warranty.
- Jackery Explorer 5000 Plus: 5,040 Wh and 7,200 W at 120/240 V, with 0 ms switchover.
- Jackery HomePower 3600 Pro Max: 3,584 Wh with a 240 V outlet, but a 1-year warranty.
- EcoFlow DELTA Pro 3: 4,096 Wh and 4,000 W at 120/240 V from one unit (the original needs two), with a 10 ms switchover and expansion to 48 kWh.
Who should buy it
And who should look elsewhere
Good fit: someone who wants 3.6 kWh of 120 V backup with fast wall charging.
Look elsewhere if: you need 240 V from one unit, a stated switchover time. The F3800 Plus or Explorer 5000 Plus suit that better.
FAQ
How long will the DELTA Pro run a fridge?
About 38 hours for a fridge and router together.
Can the DELTA Pro run 240 V appliances?
Not from a single unit, which is 120 V only.
How fast does the DELTA Pro charge?
Up to 3,000 W from the wall, about 1.8 hours, or about 2.7 hours at 1,800 W.
Can I expand the DELTA Pro?
Yes. EcoFlow quotes up to 25 kWh using two units with extra batteries.
